The lithium-ion battery system for the 2015 Chevrolet Spark EV is built at GM’s Brownstown, Mich., plant. PHOTO GM
DETROIT—General Motors Co. (GM) is bringing all of its electric vehicle battery building in-house, launching production of the lithium-ion (Li-ion) battery packs for the 2015 Chevrolet Spark EV at a plant in Michigan.

According to the automaker, production of the Li-ion packs for the Spark EV will take place at its battery assembly plant in Brownstown, Mich., south of Detroit.

The plant recently received a US$65-million makeover to support next-generation electric vehicle battery production as part of a larger US$449-million investment in GM’s Michigan operations.